I want to print all lines wihtch contains the string "Open" from a bunch
of 'xml' files. Additionally I want to print the filename and the line
number of the match.
The problem with the following snippet is, that the variable '$.' does
not reset the line number at the beginning of a new file.
That menas, the printed file numbers are not correct except for the
first file of '*.xml'
Does it all have to be done in ruby?
Why not
ls *.xml | xargs ruby -n -e 'puts ($FILENAME + " " + $..to_s + "" + $_) if
/Open/'
···
On Mon, Jan 12, 2009 at 3:21 PM, Alain Helfenstein <a-helfenstein@bluewin.ch > wrote:
Hi
I want to print all lines wihtch contains the string "Open" from a bunch
of 'xml' files. Additionally I want to print the filename and the line
number of the match.
The problem with the following snippet is, that the variable '$.' does
not reset the line number at the beginning of a new file.
That menas, the printed file numbers are not correct except for the
first file of '*.xml'
ruby -ne 'puts "#$FILENAME #$. #$_" if /Open/; $.=0 if ARGF.eof?' *.xml
Cheers
robert
···
On 12.01.2009 14:21, Alain Helfenstein wrote:
I want to print all lines wihtch contains the string "Open" from a bunch
of 'xml' files. Additionally I want to print the filename and the line
number of the match.
The problem with the following snippet is, that the variable '$.' does
not reset the line number at the beginning of a new file.
That menas, the printed file numbers are not correct except for the
first file of '*.xml'
I was wondering if you could reset the line counter but didn't think of just
setting $. = 0
Sometimes ruby is just too easy I still sometimes think things need to
be more complicated.
···
On Mon, Jan 12, 2009 at 9:14 PM, Robert Klemme <shortcutter@googlemail.com>wrote:
On 12.01.2009 14:21, Alain Helfenstein wrote:
I want to print all lines wihtch contains the string "Open" from a bunch
of 'xml' files. Additionally I want to print the filename and the line
number of the match.
The problem with the following snippet is, that the variable '$.' does
not reset the line number at the beginning of a new file.
That menas, the printed file numbers are not correct except for the
first file of '*.xml'
Sorry, I made a mistake with my answer above. Instead of using xargs (which
was exactly the same as your method - actually)
Use find to make sure ruby gets a unique file each time:
find *.xml -exec ruby -n -e 'puts ($FILENAME + " " + $..to_s + "" + $_) if
/Open/' {} \;
--still doesn't help on Windows though
Instead of trying to do this in a one-liner, save the following as a file:
ARGV.each do |filename|
File.open(File.join(File.dirname(__FILE__), filename)) do |file|
while line = file.gets
puts (filename + " " + $..to_s + "" + $_) if line =~ /Open/
end
end
end
And then run:
ruby <filename> *.xml
Hopefully that helps
···
On Mon, Jan 12, 2009 at 4:45 PM, Alain Helfenstein <a-helfenstein@bluewin.ch > wrote:
Andrew Timberlake wrote:
> On Mon, Jan 12, 2009 at 3:21 PM, Alain Helfenstein > > <a-helfenstein@bluewin.ch > >> wrote:
>
>> first file of '*.xml'
>>
>> ruby -n -e 'puts ($FILENAME + " " + $..to_s + "" + $_) if /Open/' *.xml
>>
>> Does anybody have a idea, on how to print the correct line number?
>>
>> Thanks a lot for your answer, Alain.
>> --
>> Posted via http://www.ruby-forum.com/\.
>>
>>
> Does it all have to be done in ruby?
> Why not
> ls *.xml | xargs ruby -n -e 'puts ($FILENAME + " " + $..to_s + "" + $_)
> if
> /Open/'
>
> --
> Andrew Timberlake
> http://ramblingsonrails.com
> http://www.linkedin.com/in/andrewtimberlake
>
> "I have never let my schooling interfere with my education" - Mark Twain
[Note: parts of this message were removed to make it a legal post.]
I want to print all lines wihtch contains the string "Open" from a bunch
of 'xml' files. Additionally I want to print the filename and the line
number of the match.
The problem with the following snippet is, that the variable '$.' does
not reset the line number at the beginning of a new file.
That menas, the printed file numbers are not correct except for the
first file of '*.xml'
Does anybody have a idea, on how to print the correct line number?
Thanks a lot for your answer, Alain.
I'm not Alain, but... Just kidding.
Here's how to do it:
ruby -ne 'puts "#$FILENAME #$. #$_" if /Open/; $.=0 if ARGF.eof?' *.xml
I was wondering if you could reset the line counter but didn't think of just
setting $. = 0
IMHO the tricky bit is to know *when* to reset, i.e. to know that ARGF#eof? signals the end of a single file and not all files.
Sometimes ruby is just too easy I still sometimes think things need to
be more complicated.
The other area where I simplified your piece of code is the string handling. Btw, when String interpolation (i.e. #$GLOBAL or #{expr}) you do not need the explicit to_s.
Kind regards
robert
···
On 12.01.2009 20:33, Andrew Timberlake wrote:
On Mon, Jan 12, 2009 at 9:14 PM, Robert Klemme > <shortcutter@googlemail.com>wrote:
On 12.01.2009 14:21, Alain Helfenstein wrote:
--
remember.guy do |as, often| as.you_can - without end
Just kidding.